package com.len.utils;


import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;

/**
 * 此工具类，用于老架构Bean 数据转换到 新架构(SOA)Bean <br>
 * 如com.redhorse.bean.CapitalDetailBean 转换为
 * com.redhorse.base.entity.BaseEntity.CapitalDetailBeanBase <br>
 *
 * @author GaoPeng
 */
public class BeanUtils {
    /**
     * 利用反射实现对象之间相同属性复制
     *
     * @param source 要复制的
     * @param
     */
    public static void copyProperties(Object source, Object target) throws Exception {

        copyPropertiesExclude(source, target, null);
    }

    /**
     * 复制对象属性
     *
     * @param from
     * @param to
     * @param excludsArray 排除属性列表
     * @throws Exception
     */
    public static void copyPropertiesExclude(Object from, Object to, String[] excludsArray) throws Exception {

        List<String> excludesList = null;

        if (excludsArray != null && excludsArray.length > 0) {

            excludesList = Arrays.asList(excludsArray); // 构造列表对象
        }

        Method[] fromMethods = from.getClass().getDeclaredMethods();
        Method[] toMethods = to.getClass().getDeclaredMethods();
        Method fromMethod = null, toMethod = null;
        String fromMethodName = null, toMethodName = null;

        for (int i = 0; i < fromMethods.length; i++) {

            fromMethod = fromMethods[i];
            fromMethodName = fromMethod.getName();

            if (!fromMethodName.contains("get"))
                continue;
            // 排除列表检测
            if (excludesList != null && excludesList.contains(fromMethodName.substring(3).toLowerCase())) {

                continue;
            }
            toMethodName = "set" + fromMethodName.substring(3);
            toMethod = findMethodByName(toMethods, toMethodName);

            if (toMethod == null)
                continue;
            Object value = fromMethod.invoke(from, new Object[0]);

            if (value == null)
                continue;
            // 集合类判空处理
            if (value instanceof Collection) {

                Collection<?> newValue = (Collection<?>) value;

                if (newValue.size() <= 0)
                    continue;
            }

            toMethod.invoke(to, new Object[]{value});
        }
    }

    /**
     * 对象属性值复制，仅复制指定名称的属性值
     *
     * @param from
     * @param to
     * @param includsArray
     * @throws Exception
     */
    public static void copyPropertiesInclude(Object from, Object to, String[] includsArray) throws Exception {

        List<String> includesList = null;

        if (includsArray != null && includsArray.length > 0) {

            includesList = Arrays.asList(includsArray);

        } else {

            return;
        }
        Method[] fromMethods = from.getClass().getDeclaredMethods();
        Method[] toMethods = to.getClass().getDeclaredMethods();
        Method fromMethod = null, toMethod = null;
        String fromMethodName = null, toMethodName = null;

        for (int i = 0; i < fromMethods.length; i++) {

            fromMethod = fromMethods[i];
            fromMethodName = fromMethod.getName();

            if (!fromMethodName.contains("get"))
                continue;

            // 排除列表检测
            String str = fromMethodName.substring(3);

            if (!includesList.contains(str.substring(0, 1).toLowerCase() + str.substring(1))) {
                continue;
            }

            toMethodName = "set" + fromMethodName.substring(3);
            toMethod = findMethodByName(toMethods, toMethodName);

            if (toMethod == null)
                continue;

            Object value = fromMethod.invoke(from, new Object[0]);

            if (value == null)
                continue;

            // 集合类判空处理
            if (value instanceof Collection) {

                Collection<?> newValue = (Collection<?>) value;

                if (newValue.size() <= 0)
                    continue;
            }

            toMethod.invoke(to, new Object[]{value});
        }
    }

    /**
     * 从方法数组中获取指定名称的方法
     *
     * @param methods
     * @param name
     * @return
     */
    public static Method findMethodByName(Method[] methods, String name) {

        for (int j = 0; j < methods.length; j++) {

            if (methods[j].getName().equals(name)) {

                return methods[j];
            }

        }
        return null;
    }

    public static void main(String[] args) {

        /*Book c = new Book();
        Book c1 = new Book();*/
       /* c.setAmount(Long.parseLong("1000"));
        c.setUserId(308850);
        c.setCapitaDirection(1);
        c.setType(Const.CAPITAL_DETAIL_TYPE_EXPECT_FEE_F);
        c.setCurrency(1);
        c.setFlag(1);
        c.setRemarks("junit test");
        c.setId(1);

        CapitalDetailBeanBase c1 = new CapitalDetailBeanBase();*/

        try {
            copyPropertiesExclude(null, null, null);

            System.out.println("");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}